A legend is reborn

Koss introduced the unique Porta Pro headphones more than 25 years ago. Known for its unusual look, these unmistakable on-ears are better known for producing terrific sound for a great price. The Porta Pro KTC maintains that legacy with its rich detail, impactful bass and open sound that is sure to impress. These headphones may look funky, but they feel great on your ears, fitting securely against your temples thanks to the extra padding and adjustable Comfort Zone settings. The Porta Pro KTC also folds up for convenient storage in the included carrying pouch.

In-line remote and microphone for Apple devices

The Porta Pro KTC includes an in-line remote and microphone designed for use with the iPhone®, iPod® and iPad®. You can make hands-free calls with your iPhone, as well as control your music and adjust volume on any of your Apple devices. The remote functionality combined with the Porta Pro KTC's excellent sound quality, comfort and portability make these headphones a smart buy.

Product Highlights:

  • in-line remote and microphone for use with iPhone, iPod and iPad®
  • Comfort Zone headband adjuster for customized, secure fit
  • 4-foot miniplug cable
  • carrying pouch
  • collapsible headband for easy storage
  • frequency response: 15-25,000 Hz
  • sensitivity: 101 dB
  • impedance: 60 ohms
  • warranty: lifetime
  • Our 60-day money-back guarantee

Koss Porta Pro KTC Reviews

Average Customer Review:

2 reviews
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Very Stylish

Written By G N, Honolulu, Hawaii on Monday, May 06, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Noise Reduction
  • Sound Quality

This is my 3rd headphone with mic and I have found these to be much better than the Sennheiser ones i bought last year. Very stylish but a litttle flimsy looking. Very lightweight with superberb audio quality me and my callers. Like KOSS said, "Hearing is Believing"

Pros: Lightweight and stylish

Cons: The "ComfortZone" adjustment is a little quirky

These are GREAT!!!

Written By Soundcrafter, McCleary, WA on Tuesday, April 02, 2013

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Not Rated
    Noise Reduction
  • Sound Quality

I have owned four pairs of these. I use them until I break them or wear out the foam ear pads. I use them when I play my drums so I can hear my drums and the music at the same time. I give them as presents as I LOVE the sound quality and how light they are. Did I mention how much I love these? I gave a pair to a drummer friend and he agreed they are the best little headphone he has ever used.

Pros: Light construction, sound guality and great accurate bass reproduction ability.

Cons: I like the old cord material that they used twenty years ago. Now they use a webbing type material that feels weird to me.

Hands-on research

What's in the box?

Download owner's manual

  • On-ear headphones with attached 4' cord and in-line remote/mic (3.5mm plug)
  • Carrying pouch
  • Limited Lifetime Warranty sheet
  • FCC compliance note

Features and Specs

Fit Style On-ear
Earcup Type Open
Noise-canceling No
Bluetooth No
Frequency Response 15-25k Hz
Sensitivity 101 dB
Impedance 60 Ohms
Weight 2.5 ounces
Cord Length 48"
Airline Adapter Included No
iPod Control Yes
Volume Control Yes
Built-in Microphone Yes
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research


Overview: The Koss Porta Pro KTC on-ear headphones features high performance, lightweight design, and the Koss Touch Control in-line remote and microphone. The collapsible headband and Comfort Zone setting lets you adjust the headphones for maximum comfort. It comes with a convenient drawstring pouch so you can take them anywhere.

Sound Quality: The Porta Pro KTCs delivers high quality sound performance from extremely rigid Mylar drivers, which minimize mechanical distortion and ensure accuracy. The oxygen-free voice coils give you get rich, deep bass, high efficiency, and a very wide frequency response, so you hear every detail.

Koss Touch Control (KTC): The cable on the left earbud features the 3-button Koss Touch Control (KTC), an in-line remote control and microphone. The KTC is "made for iPhone, iPad, and iPod", and lets you control the volume, music playback, and phone call management.

Comfort Zone: The Porta Pro KTC headphones have a simple, collapsible metal headband, making them easy to fit to your head. You can adjust the two temporal pads from light to firm using the Comfort Zone controls.

Cord: The headphones have a 4' straight cord with a slender 3.5mm straight plug. The small diameter plug design can be easily plugged into recessed headphone jacks or when the smartphone or digital music player is contained in a hard case.

Warranty: The Porta Pro KTCs are covered by the Koss Stereophones Limited Lifetime Warranty.


  • Frequency Response: 15Hz-25kHz
  • Sensitivity (dB/1mW): 101dB
  • Nominal Impedance: 60 ohms

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